Had away from home cover on loads when I was in the UK, got the same here, excess goes up for carbon and racing but thats it.
It’s 1) worth reading the policy before you buy
2) Picking a policy that covers you for what you want/need
Amazingly not all insurance is the same.
As for crash replacement I think they generally go with we will do what we can to offer you blah blah blah.
What that is reliant on is them having spare frames that are not set aside for warranty. If they don’t have any Alu left then I can see then not wanting to do you a cheap carbon one or they couldn’t beat what Pauls Cycles offered you.